US8623747B1 - Silicon, aluminum oxide, aluminum nitride template for optoelectronic and power devices - Google Patents
Silicon, aluminum oxide, aluminum nitride template for optoelectronic and power devices Download PDFInfo
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- US8623747B1 US8623747B1 US13/717,182 US201213717182A US8623747B1 US 8623747 B1 US8623747 B1 US 8623747B1 US 201213717182 A US201213717182 A US 201213717182A US 8623747 B1 US8623747 B1 US 8623747B1
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- aluminum oxide
- aluminum nitride
- silicon substrate
- gan
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02367—Substrates
- H01L21/0237—Materials
- H01L21/02373—Group 14 semiconducting materials
- H01L21/02381—Silicon, silicon germanium, germanium
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02367—Substrates
- H01L21/02433—Crystal orientation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02436—Intermediate layers between substrates and deposited layers
- H01L21/02439—Materials
- H01L21/02488—Insulating materials
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02518—Deposited layers
- H01L21/02521—Materials
- H01L21/02538—Group 13/15 materials
- H01L21/0254—Nitrides
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02612—Formation types
- H01L21/02617—Deposition types
- H01L21/0262—Reduction or decomposition of gaseous compounds, e.g. CVD
Definitions
- This invention relates in general to the formation of a template for the growth of GaN on a silicon substrate and more specifically to the formation of an aluminum oxide/aluminum nitride template.
- the desired objects and aspects of the instant invention are achieved in accordance with a preferred method of forming a template on a silicon substrate including a step of providing a single crystal silicon substrate.
- the method further includes forming an aluminum oxide coating on the surface of the silicon substrate, the aluminum oxide being substantially crystal lattice matched to the surface of the silicon substrate and epitaxially depositing a layer of aluminum nitride (AlN) on the aluminum oxide coating substantially crystal lattice matched to the surface of the aluminum nitride.
- AlN aluminum nitride
- the method further includes a step of epitaxially depositing a layer of III-N material on the layer of aluminum nitride.
- the step of epitaxially depositing a layer of III-N material includes growing an LED structure and/or an HEMT structure on the layer of aluminum nitride.
- the desired objects and aspects of the instant invention are achieved in accordance with a specific method of forming a template on a silicon substrate including the step of providing a single crystal silicon substrate.
- the method further includes the step of forming an aluminum oxide coating on the surface of the silicon substrate with a thickness in a range of approximately 1 nm to approximately 10 nm.
- the aluminum oxide is substantially crystal lattice matched to the surface of the silicon substrate.
- the method includes a step of epitaxially depositing a layer of aluminum nitride (AlN) on the aluminum oxide coating, in a range of >0 to approximately 100 nm thick.
- AlN aluminum nitride
- the desired objects and aspects of the instant invention are also realized in accordance with a specific crystal lattice matched template on a single crystal silicon substrate.
- the template includes an aluminum oxide coating on the surface of the silicon substrate, the aluminum oxide being substantially crystal lattice matched to the surface of the silicon substrate.
- a layer of aluminum nitride (AlN) is epitaxially grown on the aluminum oxide coating and substantially crystal lattice matched to the surface of the aluminum oxide coating.
- FIG. 1 is a simplified layer diagram of a template on a silicon substrate, in accordance with the present invention
- FIG. 2 is a simplified layer diagram of the template of FIG. 1 with an LED structure formed thereon;
- FIG. 3 is a simplified layer diagram of the template of FIG. 1 with an HEMT structure formed thereon.
- FIG. 1 a simplified layer diagram is illustrated representing several steps in a process of forming a template 12 on a silicon substrate 10 , in accordance with the present invention.
- substrate 10 is or may be a standard well known single crystal wafer or portion thereof generally known and used in the semiconductor industry.
- Single crystal substrates are not limited to any specific crystal orientation but could include ⁇ 111> silicon, ⁇ 110> silicon, ⁇ 100> silicon or any other orientation or variation known and used in the art.
- the Si ⁇ 100> and ⁇ 111> substrates could also include various miscuts with nominal value between 0 and 10° in any direction.
- Silicon substrate 10 is coated with a layer 14 of aluminum oxide formed on the surface thereof.
- Aluminum oxide layer 14 is grown epitaxially and is mostly single crystal material substantially crystal lattice matched to silicon substrate 10 . It will be understood that Al 2 O 3 is the normal proportion required (stoichiometric) but non-stoichiometric compounds (e.g. Al 2-x O 3-y ) may be used in specific applications. Also, aluminum oxide layer 14 may include aluminum oxynitride (Al x O y N), which is intended to come within the definition of “aluminum oxide” for purposes of this invention.
- aluminum oxide is impervious to MBE process gasses, i.e. N 2 plasma, NH 3 and metallic Ga, which is the preferred growth process in this invention.
- MOCVD process gasses NH 3 , H 2 , TMGa, etc.
- Reaction of silicon with process gasses usually results in etching of silicon (H 2 ), formation of nitrides (NH 3 ), or severe reaction and blistering (Ga precursors).
- silicon substrate 10 is protected from damage caused by generally all frowth process gasses by the aluminum oxide coating.
- aluminum oxide layer 14 is in a range of approximately 1 nm to approximately 10 nm thick but for certain applications thicker or thinner films can be grown. Also, aluminum oxide layer 14 can be formed with a single continuous composition or it can be graded, in linear, stepwise or any similar schemes.
- a thin aluminum nitride (AlN) layer 16 is epitaxially grown on aluminum oxide layer 14 preferably by an MBE process. Also, in a preferred embodiment layer 16 is in a range of >0 to approximately 100 nm thick.
- the combination of aluminum oxide layer 14 and aluminum nitride layer 16 results in template 12 for the further growth of III-N materials.
- Template 12 substantially crystal lattice matches the III-N materials to the silicon substrate and greatly reduces any thermal mismatch. Also, template 12 imparts chemical stability to the process due to the nature of the materials.
- III-N LED structure 20 is illustrated as a single layer for convenience but it should be understood that III-N LED structure 20 includes the growth of one or more typical layers, including for example, i-GaN, n-GaN, active layers such as InGaN/GaN, electron blocking layers, p-GaN, and other inter-layers used in the formation and performance of LED (especially photonic LED) devices.
- typical layers including for example, i-GaN, n-GaN, active layers such as InGaN/GaN, electron blocking layers, p-GaN, and other inter-layers used in the formation and performance of LED (especially photonic LED) devices.
- template 12 is illustrated with a HEMT structure 30 formed thereon.
- Structure 30 is illustrated as a single layer for convenience but it should be understood that HEMT structure 30 includes the growth of one or more typical layers, including for example, i-GaN, AlN, AlGaN, GaN, and other inter-layers used in the formation and performance of HEMT devices.
- new and improved methods for the formation of an aluminum oxide/aluminum nitride template on a silicon substrate are disclosed.
- the new and improved methods for the formation of the template include eliminating or greatly reducing the problem of possibly damaging the silicon substrate with process gasses.
- the invention also includes a new and improved aluminum oxide/aluminum nitride template on a silicon substrate.
- New and improved LED and/or HEMT structures can be substantially lattice matched and thermally matched by the new template on a silicon substrate.
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- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
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Abstract
Description
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Priority Applications (1)
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US13/717,182 US8623747B1 (en) | 2012-12-17 | 2012-12-17 | Silicon, aluminum oxide, aluminum nitride template for optoelectronic and power devices |
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US13/717,182 US8623747B1 (en) | 2012-12-17 | 2012-12-17 | Silicon, aluminum oxide, aluminum nitride template for optoelectronic and power devices |
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US8623747B1 true US8623747B1 (en) | 2014-01-07 |
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US13/717,182 Expired - Fee Related US8623747B1 (en) | 2012-12-17 | 2012-12-17 | Silicon, aluminum oxide, aluminum nitride template for optoelectronic and power devices |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140231817A1 (en) * | 2013-02-20 | 2014-08-21 | Erdem Arkun | Iii-n material grown on alo/aln buffer on si substrate |
US20150187618A1 (en) * | 2013-12-30 | 2015-07-02 | Enkris Semiconductor, Inc. | System and method for forming gan-based device |
CN112466925A (en) * | 2020-10-22 | 2021-03-09 | 西安电子科技大学 | Low-radio-frequency-loss silicon-based gallium nitride radio-frequency power device and preparation method thereof |
WO2023058706A1 (en) * | 2021-10-08 | 2023-04-13 | 東ソー株式会社 | Laminate and method for manufacturing same |
Citations (5)
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US20040099918A1 (en) * | 2002-08-30 | 2004-05-27 | Tdk Corporation | Electronic device substrate structure and electronic device |
US7541258B2 (en) * | 2004-12-01 | 2009-06-02 | Seiko Epson Corporation | Method of manufacturing semiconductor substrate and method of manufacturing semiconductor device |
US7615452B2 (en) * | 2007-07-06 | 2009-11-10 | Sanken Electric Co., Ltd. | Method of fabrication of normally-off field-effect semiconductor device |
US20100096666A1 (en) * | 2007-03-15 | 2010-04-22 | National University Corporation Toyohashi University Of Technology | Laminar structure on a semiconductor substrate |
US20100288999A1 (en) * | 2007-10-19 | 2010-11-18 | Showa Denko K.K. | Group iii nitride semiconductor light-emitting device |
-
2012
- 2012-12-17 US US13/717,182 patent/US8623747B1/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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US20040099918A1 (en) * | 2002-08-30 | 2004-05-27 | Tdk Corporation | Electronic device substrate structure and electronic device |
US7541258B2 (en) * | 2004-12-01 | 2009-06-02 | Seiko Epson Corporation | Method of manufacturing semiconductor substrate and method of manufacturing semiconductor device |
US20100096666A1 (en) * | 2007-03-15 | 2010-04-22 | National University Corporation Toyohashi University Of Technology | Laminar structure on a semiconductor substrate |
US7615452B2 (en) * | 2007-07-06 | 2009-11-10 | Sanken Electric Co., Ltd. | Method of fabrication of normally-off field-effect semiconductor device |
US20100288999A1 (en) * | 2007-10-19 | 2010-11-18 | Showa Denko K.K. | Group iii nitride semiconductor light-emitting device |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140231817A1 (en) * | 2013-02-20 | 2014-08-21 | Erdem Arkun | Iii-n material grown on alo/aln buffer on si substrate |
US8823025B1 (en) * | 2013-02-20 | 2014-09-02 | Translucent, Inc. | III-N material grown on AIO/AIN buffer on Si substrate |
US20150187618A1 (en) * | 2013-12-30 | 2015-07-02 | Enkris Semiconductor, Inc. | System and method for forming gan-based device |
CN112466925A (en) * | 2020-10-22 | 2021-03-09 | 西安电子科技大学 | Low-radio-frequency-loss silicon-based gallium nitride radio-frequency power device and preparation method thereof |
WO2023058706A1 (en) * | 2021-10-08 | 2023-04-13 | 東ソー株式会社 | Laminate and method for manufacturing same |
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